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How Bluetooth came to be

Kirk Backus

on 25 February 2011

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Transcript of Bluetooth

Hearld I of Denmark "Blatand" Danish for Bluetooth Master Slave Slave Slave Master Slave Architecture 10 1994 The Bluetooth standard was founded by Ericsson Telecommunications Company 1998 Ericcson, IBM, Intel, Nokia, and Toshiba formed the Bluetooth Special Interest Group to promote the Bluetooth standard Today Today, the Bluetooth SIG has over 13,000 members Bluetooth WHAT IS ? ? "Blatand" is Bluetooth wireless technology is a short-range communications technology intended to replace the cables connecting portable and/or fixed devices while maintaining high levels of security The Technical Stuff Bluetooth uses the 2.4 GHz radio frequency band ... but so do a lot of other devices RADIO Frequency-Hopping
Spread Spectrum About 1600 times a second, the connected Bluetooth devices switch frequencies in unision They choose one of the 79 available bands available in the 2.4 GHz spectrum S M S 5 6 7 8 9 M 4 M M S S 0 1 2 3 625 µs = 0.000625 seconds Master Slave Communication Bluetooth = Tiny Radio
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